What you could try is to pull one of the head bolts out and take it to a local hardware store and see if you can find a ring bolt with the same diameter, thread pitch, and length as the head bolt. Then buy two of them and replace the head bolt you removed with a ring bolt and put the other ring bolt at the other end of the engine on the opposite side. In other words, you should have a ring bolt at the right front corner and left rear corner of the head (or vice versa, doesn't really matter)in place of 2 of the head bolts. Then hook up your chain or cable to the ring bolts and you're all set. That should keep the engine from tilting when you pull it, and you just put the head bolts back in and retorque them after the new motor is in place. But make sure that you get the ring bolts that are solid, not the type that have a gap in the ring at the end of the loop. I've also seen chains with a kind of spoon shaped hunk of metal attached at each end with a hole drilled in it that you put the head bolt through and fasten it down. Those are kind of a specialty item, but are probably available any place you could rent an engine hoist. Either one works real well for lifting an inline engine.
